Cyclopædia of useful arts & manufactures, ed. by C. Tomlinson. 9 divs, Volum 21852 |
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Cyclopædia of useful arts & manufactures, ed. by C. Tomlinson. 9 divs, Volum 2 Cyclopaedia Visualització completa - 1852 |
Cyclopædia of Useful Arts & Manufactures, Ed. by C. Tomlinson. 9 Divs Cyclopaedia Previsualització no disponible - 2015 |
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axis beam becomes bobbin boiling bottom brass brush calcined called camphor candles caoutchouc carbonic acid cards cast cast-iron centre charcoal chicory chimney chlorine chromic acid cloth coal cobalt coffee colour combustion containing copper cotton covered crystals cylinder diameter diamond drawing rollers edge employed equal feet fire fixed flame frame furnace glass heat holes horizontal inches iron layer length lever liquid machine manufacture means melted metal motion mould nitric acid operation oxide oxygen passing pattern piece placed plates polished portion potash pound powder pressure produced quantity removed roasted roller beam rollers round roving sand scoria screw shaft side silica slag solid solution speculum speculum metal spindle square substance sulphuret sulphuric acid surface temperature thick thin thread tons tube turned twist upper vapour vessel weight wheel wire wood yarn
Passatges populars
Pàgina 364 - Another cause of smoking is, when the tops of chimneys are commanded by higher buildings, or by a hill, so that the wind, blowing over such eminences, falls like water over a dam, sometimes almost perpendicularly on the tops of the chimneys that lie in its way, and beats down the smoke contained in them.
Pàgina 299 - Familiar Introduction to the Theory and Practice of Perspective, printed in 1770; and it will be observed that no name is given to the substance described : " Since this work was printed off, I have seen a substance excellently adapted to the purpose of wiping from paper the marks of a black-lead pencil.
Pàgina 395 - ... good-natured collier will bestow a little bit of candle on them as a treat. On one occasion, as I was passing a little trapper, he begged me for a little grease from my candle. I found that the poor child had scooped out a hole in a great stone, and, having obtained a wick, had manufactured a rude sort of lamp; and that he kept it going as well as he could by begging contributions of melted tallow from the candles of any Samaritan passers-by.
Pàgina 284 - ... otherwise, on relaxing the pressure, the outline of the figure discharged would become ragged. The passage of the discharge liquor, as well as of the water through the cloth, is occasionally aided by a pneumatic apparatus, or blowing machine ; consisting of a large gasometer, from which air, subjected...
Pàgina 290 - An experienced old housekeeper assures me that one pound and a half of rushes completely supplies his family the year round, since working people burn no candles in the long days, because they rise and go to bed by daylight.
Pàgina 272 - ... is the introduction into it of the principle which Jacquard devised for regulating, by means of punched cards, the most complicated patterns in the fabrication of brocaded stuffs.
Pàgina 395 - ... carriages for conveying the coal) at hand, and the moment it has passed they let the door fall to, which it does of its own weight. If anything impedes the shutting of the door they remove it, or, if unable to do so, run to the nearest man to do it for them.
Pàgina 397 - ... filled by the bearers: she then takes her creel (a basket formed to the back, not unlike a cockle-shell, flattened towards the neck, so as to allow lumps of coal to rest on the back of the neck and shoulders), and pursues her journey to the wall-face, or as it is called here, the room of work.
Pàgina 272 - I am myself astonished," says Mr. Babbage, "at the power I have been enabled to give to this machine ; a year ago I should not have believed this result possible. This machine is intended to contain a hundred variables, or numbers susceptible of changing, and each of these numbers may consist of twenty-five figures. The greatest difficulties of the invention have already been surmounted, and the plans will be finished in a few months.
Pàgina 241 - Ibs. is sufficient to produce fracture, if passed over them at the rate of 30 miles an hour. It also appeared that, when motion was given to the load, the points of greatest deflection, and, still more, of the greatest strains, did not remain in the centre of the bars, but were removed nearer to the remote extremity of the bar. The bars, when broken by a travelling load, were always fractured at points beyond their centres, and often broken into four or five pieces, thus indicating the great and...